Improvement in alarms and fire-extinguishers



" s. sANueRsoN.

Alarm Aand Fire-Extinguisher.

N0. 162 579. Patented Aprl27,1875.

THE GRAPHIC CONN OTO "LITH.39 Br. 41 PARK PLACEJtY.

UNITED STATES PATENTQEE'TOE..

SOLOMON SANDERSON, OF HUDDERSFIELD, ENGLAND.

IMPROVEMENT IN ALARMS AND FIRE-EXTINGUlSHERS.

Specification forming part of Letters Patent N0. 162,579, dated April 27, 1875; application filed April 14, 1875.

To all whom it may concern Be it known that I, SOLOMON SANDERsON, of Huddersfield, in the county of York, England, have invented certain Improvements in Apparatus for Extinguishing Fires and Giving an Alarm, of which the following is a specification This invention relates to thermostatic apparatus, whereby the expansion ot mercury or other substance, or of an elastic vessel capable of expansion by heat, such as caoutchouc or skin bladder containing a fluid, is made to operate, the cock or valve, so asy to allow steam, water, or other suitable fluids or ga-ses to escape, for the purpose Ot' extinguishing tires. 1

The drawing illustrates the arrangement which I prefer to use in apparatus constructed according to this invention, though this arrangement must necessarily be varied according to the circumstances under which the apparatus is used, and the form of expansive agent or thermometers, batteries, magnets, and materials used.

A, the thermometer; B B', the bindingscrews 5' C, the glass bulb and tube containing mercury 5 D, platinum wire connecting the mercury with binding-screw B; and D', the wire protruding into empty space of tube, and connected with binding-screw B' 5 E E', wires connecting the thermometer with battery and electro-magnet F F, which attracts the armature marked N, when the mercury in the bulb is expanded by undue heat to platinum wire D'. The armature N is prolonged and centered at P, having at its prolonged end a n otch or catch, h, to hold Weighted leverI, which is centered at p. J is a steaml water cock or valve, which may be attached at any steam, water, or other uid supply. K is a wheel mounted on a pin or spindle, p', and weighted by a weight marked q, to cause it to turn inthe direction of the arrow, which winds the chain R onto boss vS, thus pulling down weighted lever u, which is centered at o on upright w, and so raising or opening valve J. Lever u is prolonged to weight'VV, which has the etl'ect of keeping the valve J' closed when the apparatus is at rest. Xis a steam, water, or iluid pipe, in connection with a boiler or reservoir. F' is a pin projecting from wheel K, which is held by a notch or catch in lever' marked 'T, thus allowing the cock or valve to remain closed.

The action of the apparatus is as follows: The apparatus is shown on the drawing ready to act on the thermometer, taking ei'iect by undue heat caused by contlagration in the building or hold of a vessel in which the apparat-us is fixed. The mercury rises in the thermometer and comes into contact with the end of D' circuit-wire, the other end of the circuit-wire being in contact already. -An electric current immediately acts on the magnet F F, which draws down the armature N and releases the lever I, which, falling, strikes the end ot' the lever T, and so releases the wheel K, and allows the weight to descend and open the cock or valve J', as already described, so admitting steam or other suitable fluid to the building to extinguish the conagration. The dotted lines show the apparatus thus thrown into action.

I claim as my invention- The cock or valve J', weighted lever u, wheel K, and weight q, in combination with the holding-catch T, percussive lever I, and lever N, moved by or through the expansion ot' a thermostat, substantially as and for the purposes set forth.

Signed by me this 12th day of March, A. D. 187 5.

SOLOMON SANDERSON. Witnesses:

ALEXANDER NORTH, ARCHIBALD H. I. FLETCHER, Clerks to Messrs. Laycock, Dyson da Lag/cock,

Solicitors, Huddersjielfl. 

